Valve.



VALVE. APPLICATION FILED NOV. 20. W16.

Patented Jan/8, 1918.

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acts on the valve as air on the reed of To all whom it my concern:

Be it known that I, Wrauau A. Donna, a citizen of the United States, and a resident of the cit andcounty of San Francisco and State of galifornia, have invented a new and useful Valve, of which the following is a specification.

The invention relates to valves for controlling the flow of li uids, and particularly to the seats of such va ves.

An object of the invention is to provide means. for reventing vibration of the valve when liqui is flowing through the openmg controlled thereby.

The invention is particularly apphcable, although not limited to, large valves m which the valve moves perpendicularly with respect to the valve seat, and is designed to prevent vibration of the valve or valve stem and the liability of consequent fracture of the stem. In the drawings I have shown the valve for flow of water, and in the iflcation I s all describe the particular embodiment shown, but it is to be unde that the invention maybe embodied in a plurality offorms and is not limited to the particular ies shown.

In sai drawings:

Figure 1 is a vertical section of a valve show ng the construction of my invention.

Fig. 2 is a pers ive view of one form of valve seat of my invention.

Fig. 3 is a vertical section of a portion of the valve shown in Fig. 1, but showing a different position of the valve relative to the valve seat.

In the present embodiment, the valve 2 in this instance, a modified form of needle valve issecured to the stem 3, which is arranged within a ide hearing or sleeve 4, to centralize an steady the valve. The valve is movable perpendicularly with respect to its seat 5 and controls the flow of water from the conduit 6 into the pipe or nozzle 7.

With the ordinary va ve seat, in opening or closing the valve, a very severe vibration is set up in the valve stem during the time that the distance between the valve and its seat is small iii-comparison to its maximum and this vibration besides rendering the 0 has resu ted in the fracture of the valve stem. The rushing of the water through the small area surrounding the valve apparently ration of the valve unsatisfactory,

an organ and causes an intense vibration.

In order to prevent this vibration, I deliberately throw the forces of the rushin water acting on the valve out of balance, an this I accomplish by confining the rushin water during the initial opening or fina closingof the valve to an area surroundi less than the periphery of the valve. The is accomplished by providing a ring or flange 8 partly surrounding the valve seat and of such diameter as to contact with the side of the valve during the period of critical opening of the valve. Fig. 3 shows the valve 2 in contact with the ring 8 durin this critical period, the flange shutting o a portion of the flow on that side. This-ring extends u ward above the valve seat preferabl on e other sideof the valve from which e water approaches, so that when the valve is in its position of critical opening, the water may flow in a smooth stream t rough the s ace between the valve and the seat. Guides are preferably provided around the valve seat at suitable intervals, which contact with the Patented Jan. 8, 1918.

valve before it enters the critical zone and after it leaves such zone, so that the valve will be guided to thering 8 and so that it will not be subjected to any deleterious strains as itstarts to leave the ring 8.;

In the present instance the ring 8 is formed integral with the pipe 7 but this is merely a matter of choice. Also, the ring is shown extending for one-half the periphery of the valve seat, but this is also a matter of choice and the ring may extendthrough a greater or a lesser arc, but it must extend through a sufiicient arc to produce a substantial unbalance of the forces of the water acting on the valve. The water outflow assage,

in a smooth streampast the valve.

I claim:

1. In a valve structure for the control of fluids, a-valve seat, a valve movable to engage and disengage said seat and means for causing the flow of fluid betweensaid valve and said seat to exert unequal pressures upon said valve transversely of its line of movement. v

2. In a valve structure for the control of fluids, advalve seat, a vdalve movdable to engagean 'disengagesa'a seat an meansmeluding a wall emaciated with said valve for above the valve seat, slopes outwar in a smooth curve, so that the water is directed causing the flow of fluid between said valve and said seat to exert unequal pressures upon said valve transversely of" its line of movement.-

3. In a valve structure for the control of fluids, a valve seat, a valve movable perpendicularly in respect of said seat, and a wall of less height than the stroke of said valve partly surrounding said valve and in sliding engagement therewith, whereby unequal pressures are exerted by said fluid upon said valve transversely of its line of movement.

4. In a valve structure for the control of fluids, a valve seat, a valve movable perpendicularly in respect of said seat, and a wall secured to said seat and part1 surrounding and engaging said valve, sai wall serving to close a portion of the assage between the valve and its seat, where y unequal pressures are exerted by said fluid upon said valve transversely of its line of movement.

5. In a valve structure, a valve .seat, a valve movable perpendicularly in respect of said seat, a wall partly surrounding said valve and in sliding engagement therewith and valve guides extending from said wall.

6. The combination with a conduit through which water is adapted to flow, of a discharge opening in said conduit, a valve seat arranged in said 0 ening, a needle valve movable perpendicu arl seat, and a wall part surrounding the valve seat and arran e to form a sliding contact with said va ve, for concentratin the forces exerted by said fluid against said valve transversely of the line of movement of the valve, upon one side thereof.

7. In a valve structure for the'control of fluids, a valve seat, a valve movable perpendicularly in respect of the plane of said seat and means for causing the flow of fluid between said valve and said seat at the beginning of the opening movement and the end of the closing movement of the valve to exert an unbalanced force upon said valve transversely of its line of movement.

In testimon whereof, I have hereunto set my hand at an Francisco, California, this 13th day of November, 1916.

In presence of' H. G. Paosr.

in respect of said 

